Я не военный историк, но краткий поиск показывает, что в военном флоте США (в отличие от британского с его даффлкотом) в период второй мировой войны носили pea coats.
US Navy, pea coat
Category: Clothing, outerwear; Personal artifacts Object Name: Coat, pea Maker: Naval Clothing Factory Date Made: 1940-1945 Materials: Cloth (wool, 100%) Keyword: Military Item Count: 1 Style/Title: US Navy, pea coat
This double breasted, navy blue US Navy pea coat is 3/4 length and features heavy lining, two rows of black plastic buttons down the center (the top true right button is missing), one button under each collar for a neck closure, two slash pockets on either side, and two interior pockets. The interior pocket on the true right has a tag that says "manufactured by Naval Clothing Factory."
== У меня нет времени углубляться, но, я думаю, полезное можно найти и здесь -
DEPARTMENT OF THE NAVY -- NAVAL HISTORICAL CENTER 805 KIDDER BREESE SE -- WASHINGTON NAVY YARD WASHINGTON DC 20374-5060 Uniforms of the US Navy: Regulations and Other Official Documents
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US Navy, pea coat
Category: Clothing, outerwear; Personal artifacts
Object Name: Coat, pea
Maker: Naval Clothing Factory
Date Made: 1940-1945
Materials: Cloth (wool, 100%)
Keyword: Military
Item Count: 1
Style/Title: US Navy, pea coat
This double breasted, navy blue US Navy pea coat is 3/4 length and features heavy lining, two rows of black plastic buttons down the center (the top true right button is missing), one button under each collar for a neck closure, two slash pockets on either side, and two interior pockets. The interior pocket on the true right has a tag that says "manufactured by Naval Clothing Factory."
http://www.museumcollections.in.gov/detail.php?t=objects&type=browse&f=date_made&s=1940-1945&record=48
==
У меня нет времени углубляться, но, я думаю, полезное можно найти и здесь -
DEPARTMENT OF THE NAVY -- NAVAL HISTORICAL CENTER
805 KIDDER BREESE SE -- WASHINGTON NAVY YARD
WASHINGTON DC 20374-5060
Uniforms of the US Navy:
Regulations and Other Official Documents
http://www.history.navy.mil/library/online/uniform_master_list.htm#uniform