From what we can know of German surplus

Its compact yet spacious design includes multiple compartments for efficient organisation and quick access

Slight marking on the back shoulder and on the sand side's sleeve

The 2 top ones are often intended for ammunition and radios

German Army Olive Green Long Sleeve Field Shirt - Large GrNr4 Lined From what we can knowAt a glance Polyester & Cotton Blend Material 2 Button Chest Pockets Comfortable & Soft Hard Wearing & Durable Shoulder Epaulettes Rank Slides Button Cuffs Classic Olive Green Colour German Flag Patches Pit to Pit: 23" Suggested Size: Large Slim Label suggests a collar of 41 42cm GrNr 4 Sleeve Length: 23. 5" Short Collar to Hem: 29" Vintage Militaria Dated 1989 Genuine Germany Army West German Army Bundeswehr Surplus Grades Grade 1. 5 In good shape,