1. How many steps does the guard take during his walk across the tomb of the Unknowns and why?
21 steps. It alludes to the twenty-one gun salute, which is the highest honor given any military or foreign dignitary.
ETERNAL REST GRANT THEM O LORD, AND LET PERPETUAL LIGHT SHINE UPON THEM.
21 seconds for the same reason as answer number 1.

3. Why are his gloves wet?
His gloves are moistened to prevent his losing his grip on the rifle.

4. Does he carry his rifle on the same shoulder all the time and if not, why not?
He carries the rifle on the shoulder away from the tomb. After his march across the path, he executes an about face and moves the rifle to the outside shoulder.
5. How often are the guards changed?
Guards are changed every thirty minutes, twenty-four hours a day, 365 days a year.
6. What are the physical traits of the guard limited to?
For a person to apply for guard duty at the tomb, he must be between 5' 10" and 6' 2" tall and his waist size cannot exceed 30." Other requirements of the Guard: They must commit 2 years of life to guard the tomb, live in a barracks under the tomb, and cannot drink any alcohol on or off duty for the rest of their lives. They cannot swear in public for the rest of their lives and cannot disgrace the uniform {fighting} or the tomb in any way. After two years, the guard is given a wreath pin that is worn on their lapel signifying they served as guard of the tomb. There are only 400 presently worn. The guard must obey these rules for the rest of their lives or give up the wreath pin.
The shoes are specially made with very thick soles to keep the heat and cold from their feet. There are metal heel plates that extend to the top of the shoe in order to make the loud click as they come to a halt. There are no wrinkles, folds or lint on the uniform. Guards dress for duty in front of a full-length mirror.
The first six months of duty a guard cannot talk to anyone, nor watch TV. All off duty time is spent studying the 175 notable people laid to rest in Arlington National Cemetery. A guard must memorize who they are and where they are interred. Among the notables are: President Taft, Joe E. Lewis {the boxer} and Medal of Honor winner Audie Murphy, {the most decorated soldier of WWII} of Hollywood fame.
Every guard spends five hours a day getting his uniforms ready for guard duty.
In 2003 as Hurricane Isabelle was approaching Washington, DC, our
US Senate/House took 2 days off with anticipation of the storm. On the ABC
evening news, it was reported that because of the dangers from the
hurricane, the military members assigned the duty of guarding the Tomb of
the Unknown Soldier were given permission to suspend the assignment. They
respectfully declined the offer, "No way, Sir!" Soaked to the skin,
marching in the pelting rain of a tropical storm, they said that guarding
the Tomb was not just an assignment, it was the highest honor that can be
afforded to a serviceperson. The tomb has been patrolled continuously,
24/7, since 1930.

Pamela Murphy, widow of WWII hero and actor, Audie Murphy, died peacefully at her home on April 8, 2010. She is survived by sons, Terry and James. Pam established her own distinctive 30 year career working as a patient liaison at the Sepulveda VA Hospital, where she was much beloved. Services will be held at Forest Lawn (Hollywood Hills) on Friday April 16 at 2:30PM

Pam Murphy, the widow of Audie Murphy, was involved in the Sepulveda VA hospital and care center over the course of 35 years, treating every veteran who visited the facility as if they were a VIP. Pam Murphy died last week at the age of 90.

After Audie died, they all became her boys. Every last one of them.
Any soldier or Marine who walked into the Sepulveda VA hospital and care center in the last 35 years got the VIP treatment from Pam Murphy. The widow of Audie Murphy – the most decorated soldier in World War II – would walk the hallways with her clipboard in hand making sure her boys got to see a specialist or doctor — STAT. If they didn't, watch out. Her boys weren't Medal of Honor recipients or movie stars like Audie, but that didn't matter to Pam. They had served their country. That was good enough for her. She never called a veteran by his first name. It was always "Mister." Respect came with the job. "Nobody could cut through VA red tape faster than Mrs. Murphy," said veteran Stephen Sherman, speaking for thousands of veterans she befriended over the years. "Many times I watched her march a veteran who had been waiting more than an hour right into the doctor's office. She was even reprimanded a few times, but it didn't matter to Mrs. Murphy. "Only her boys mattered. She was our angel."
Last week, Sepulveda VA's angel for the last 35 years died peacefully in her sleep at age 90.
"She was in bed watching the Laker game, took one last breath, and thatwas it," said Diane Ruiz, who also worked at the VA and cared for Pam in the last years of her life in her Canoga Park apartment. It was the same apartment Pam moved into soon after Audie died in a plane crash on Memorial Day weekend in 1971. Audie Murphy died broke, squandering million of dollars on gambling, bad investments, and yes, other women. "Even with the adultery and desertion at the end, he always remained my hero," Pam told me.
She went from a comfortable ranch-style home in Van Nuys where she raised two sons to a small apartment - taking a clerk's job at the nearby VA to support herself and start paying off her faded movie star husband's debts. At first, no one knew who she was. Soon, though, word spread through the VA that the nice woman with the clipboard was Audie Murphy's widow. It was like saying Patton had just walked in the front door. Men with tears in their eyes walked up to her and gave her a hug. "Thank you," they said, over and over.
The first couple of years, I think the hugs were more for Audie's memory as a war hero. The last 30 years, they were for Pam.
She hated the spotlight. One year I asked her to be the focus of a Veteran's Day column for all the work she had done. Pam just shook her head no. "Honor them, not me," she said, pointing to a group of veterans down the hallway. "They're the ones who deserve it."
The vets disagreed. Mrs. Murphy deserved the accolades, they said. Incredibly, in 2002, Pam's job was going to be eliminated in budget cuts. She was considered "excess staff." "I don't think helping cut down on veterans' complaints and showing them the respect they deserve, should be considered excess staff," she told me. Neither did the veterans. They went ballistic, holding a rally for her outside the VA gates. Pretty soon, word came down from the top of the VA. Pam Murphy was no longer considered "excess staff." She remained working full time at the VA until 2007 when she was 87. "The last time she was here was a couple of years ago for the conference we had for homeless veterans," said Becky James, coordinator of the VA's Veterans History Project.
Pam wanted to see if there was anything she could do to help some more of her boys.
About Audie Murphy http://www.warfoto.com/AudieMurphy.htm