Frank Guillard is a 93 years old world war 2 United States army veteran, he formerly served in the Army Ground Forces of the US Army.
He was formerly involved in the Italian campaign where infantry casualties are the highest.
During the campaign he mostly slept on the floors or out on the dirt, always on high alert. He would also have to scale up and down mountains and rivers to set up camps.
This eventually took a toll at his body and resulted in constant neck and joint aches.
The war was over but the worse has yet to come.
When they were brought back to the US Guillard and many of his squad members suffered from major neck injuries and PTSD.