Question: are black socks authorized in ocp?
Answer: FM 7-22 states: "All Soldiers in a unit PRT formation will wear the same uniform. ... The socks are tan, green, or black, stretch type, calf-length with a cushion sole." and with the IPFU "Commanders may authorize wear of commercial running shoes with calf-length or ankle-length, plain white or black socks (no logos).