He was living in the Gila River War Relocation Center in Arizona when he enlisted in the 442nd Regimental Combat Team during WWII. The group, made up mostly of Japanese Americans, would become one of the most decorated units of its size.
As a soldier, “Staff Sergeant Kazuo Otani distinguished himself by extraordinary heroism in action on 15 July 1944, near Pieve Di S. Luce, Italy. Advancing to attack a hill objective, Staff Sergeant Otani’s platoon became pinned down in a wheat field by concentrated fire from enemy machine gun and sniper positions. Realizing the danger confronting his platoon, Staff Sergeant Otani left his cover and shot and killed a sniper who was firing with deadly effect upon the platoon. Followed by a steady stream of machine gun bullets, Staff Sergeant Otani then dashed across the open wheat field toward the foot of a cliff, and directed his men to crawl to the cover of the cliff. When the movement of the platoon drew heavy enemy fire, he dashed along the cliff toward the left flank, exposing himself to enemy fire. By attracting the attention of the enemy, he enabled the men closest to the cliff to reach cover. Organizing these men to guard against possible enemy counterattack, Staff Sergeant Otani again made his way across the open field, shouting instructions to the stranded men while continuing to draw enemy fire. Reaching the rear of the platoon position, he took partial cover in a shallow ditch and directed covering fire for the men who had begun to move forward. At this point, one of his men became seriously wounded. Ordering his men to remain under cover, Staff Sergeant Otani crawled to the wounded soldier who was lying on open ground in full view of the enemy. Dragging the wounded soldier to a shallow ditch, Staff Sergeant Otani proceeded to render first aid treatment, but was mortally wounded by machine gun fire.”
For his actions, Kazuo was awarded the Distinguished Service Cross, which was upgraded to a Medal of Honor in 2000.
Note: The writing on the photograph says “To Mom & Dad” in the upper left corner and “your son! Kazuo” in the bottom right.