He soon saw action in the Seven Days Battles near Richmond, Virginia. It was during this fighting that General Griffith was mortally wounded. On June 29, 1862, Griffith and his men were pursuing Union soldiers retreating from positions on the Nine Mile Road when they encountered elements of Maj. Gen. Edwin V. Sumner's II Corps near Savage's Station, who were guarding the Union forces' retreat. In heavy artillery fire, Griffith was wounded in his thigh by a shell fragment.