TM 10-8400-201-23 2-3.  IDENTIFICATION AND DESCRIPTION a.  Shirt (1)  Shirt, Utility (Durable Press) OG-507 (table 2-1). (2)  This shirt (fig. 2-1)  Is fabricated from cloth, twill, polyester/cotton, durable press, olive green 507.  It is a loose- fitting garment with six button front, two outside patch pockets with button-down flaps; and a button on each cuff. The shirt tall has a square design and is worn inside the trousers. Figure 2-1.  Shirt Utility (Durable Press) Olive green 507, type 1 2-2