On December the 23, 1942, Royal Jensen was brought to the United States army. He was first brought to the Fort Douglas army camp in Salt Lake City, Utah.  About an average of 100 men were brought there that day.  He was then sent to Jefferson Barricks, Missouri, after he stayed at Fort Douglas army camp for five days.  Jensen learned his most training, in Jefferson Barricks, Missouri.  He was just outside of Jefferson City and close to the Mississippi River, he stayed there for about 10 weeks.  About 30 miles away, was the city of St. Louis.  He and the men in the army, stayed in qaunsit huts, there were about six beds to a hut.  That was the coldest winter he remembered.

Jensen was one of the 936 engineers, attached to the Third Air Force,when he was shipped with 600 other men to Richmond,Virginia.  He learned much about the enemy.  He had to be prepared to fight, at any time of the night.  Many times at night he had to march to the Lincoln park.  Ever since the Civil War, the Lincoln park had been preserved.  Some old trenches, from Lincoln Park, had still been there since the Civil War.  After the men were through marching, they would walk back to camp.  From their camp to the park was six miles, and then to walk back was six more miles.  He spent three months there.

Two hundred men were sent to camouflage school, including himself.  He learned to camouflage equipment, when he was sent to South Carolina.  He hid tanks, fighter planes, big guns, big trucks, and other kinds of equipment.  He enjoyed his duty very much.  After three months of schooling, all but 20 of the men  were sent to different camps.  While Royal Jensen was in the army, he was promoted to a T5 Camouflage technician.  He was payed $66 a month which was more than a private got payed a month. A private was only payed $16 a month.  He was one of the 20 men still in the camouflage camp.  Jensen had to teach the soldiers who came to the camp, how to camouflage things. He never had to go to war. Until he was discharged from the army, he spent most of his time in Walter Boro, South Carolina.