Navy E-4/5/6 Machinist's Mate Rating Badges Rating Badge Type:Blue Serge having successfully completed formal resident

having successfully completed formal resident training and 12 months in a primary duty MTOE/TDA retention coded position (PMOS 79S or other previously assigned retention MOS)

Material: 50% Nylon/50% Cotton Rip-Stop

Air Force as a separate branch of service in 1947

United States Army Branch Specific Shoulder Cords

United States Army Cap Strap

Navy E-4/5/6 Machinist's Mate Rating Badges Rating Badge Type:Blue Serge having successfully completed formal residentUnited States Navy E 4 5 6 Machinist's Mate Rating Badge Criteria: Worn by Machinist's Mates (MM) with ranks from Petty Officer 3rd Class (E 4) to Petty Officer 1st Class (E 6). Machinist's Mates are typically responsible for the continuous operation of the engines, compressors, refrigeration and air conditioning equipment aboard the USN's vessels and at their land based installations. Some Machinist's Mates are also trained in Health Physics and