Help Identifying Leggings and Headgear

[ozarkmac]

From what I have researched, the best I can tell this is a WW2 era "Enlisted Pippen Garrison Cap." The number "5351" is stamped inside on the cloth. It has a leather band inside as well.
Any idea what the number indicates?

The best I can tell these are WW2 era leggings. Both are stamped internally with "M-6719" and one of them stamped internally with "675-K" and "G-3599." Any idea what the numbers indicate?

Any help would be appreciated. Sorry about the jumbled pics.
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Information

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[Flying10uk]

There you go.

[ozarkmac]

Thanks

[RT Ellis]

The leggings are U.S. Army M-1938. The U.S. Army garrison cap has the black and gold piping for a company (2LT, 1LT, CPT) or field grade (MAJ, LTC, COL) officer. The letter and four numbers was marked on uniforms and equipment to identify the individual soldier the item was issued to. It's the first initial of the soldier's last name and the last four numbers of the Army Service Number. This identification code is often mistakenly refereed to by collectors as a "laundry number."