A small sample of original enlisted issue M36 and M40 field blouses was examined to determine what types of suspender retaining hooks were used and how they were positioned.
Garment 1: M40 field blouse, Erfurt depot 1940
This field blouse is stamped with a torso length of 41 centimeters and a total length of 68 centimeters. The retaining hooks are 17 millimeters long and are located 21 millimeters from the bottom edge of the lowest belt hook hole (note: this is the distance from the top of the retaining hook to the bottom edge of the eyelet opening- not the stitching). The hooks are blackened steel.
Garment 2: M40 field blouse, depot and date stamp illegible
This field blouse has the exact same length measurements as the previous example. Theretaining hooks are only 19 millimeters from the belt hook eyelet. The steel hooks have corroded and it was not possible to determine the original finish. These hooks were also 17 millimeters long.
Garment 3: M36 field blouse, Erfurt depot 1939
This field blouse is stamped with a torso length of 43 centimeters and a back length of 71 centimeters. The lower pockets were moved up when this garment was retailored for reissue. The retaining hooks are 16 millimeters long and have a bright finish. They are 47 millimeters below the belt hook eyelets.
Garment 4: M40 field blouse, Erfurt depot 1940
This field blouse has identical length measurements to the previous example, and identical 17 millimeter long bright finish hooks. As on the previous example, the pockets were moved from the factory positioning; this example was retailored for an officer. The retaining hooks on this example are 28 millimeters from the belt hook eyelets.
It was noted that the positioning of the retaining hooks differed on field blouses with identical lengths. Garments 1 and 2 show the retaining hooks applied with the top edge of the hook just at the lower row of pocket flap stitching. Garments 3 and 4 were altered, the hooks no longer line up with the pocket flap stitching- but the traces of the original factory stitching are discernible and on both examples, the top edge of the hook lines up with the lowest row of the original factory pocket flap stitching. The conclusion based on this small sample, then, is that the retaining hooks were positioned not based on the belt hook eyelet positioning, but rather they were positioned immediately below the pocket flap stitching.