Today in WW II: 23 May 1943 Adm. Döntiz, commander of the German Navy, calls off the Battle of the Atlantic, recognizing that the U-boat is no longer an effective weapon.  More 
23 May 1944 Allied breakout from Anzio beachhead.
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WC-1 WC-5 WC-12 WC-14 WC-40 Truck, 1/2 ton, 4x4 Dodge WC Closed Cab Pickup (G505)

The Dodge WC-1 and the very similar WC-5 WC-12 WC-14 and WC-40, are 1/2 ton pickup trucks with slightly different engines and other small differences. All have a closed metal cab based on Dodge civilian trucks. All are part of the WC model series G-505, built by Dodge during 1941 or early 1942.

If you don't have the vehicle dataplate, to differentiate you must know the U.S. Government registration number (Army number on the hood) or the serial number which can be found stamped on the left front frame.

Model Serial Number Range Hood Number Range
WC-1 8644701-8666216 W24615-W25789
W25792-W27189
WC-5 8644701-8666216 W001332-W001391
WC-12 8676901-88694193 W222266-W227043
W603856-W004123
W231275-W232274
W-80766*
WC-14 8676901-88694193 W003856-W004123
WC-40 81500001-??? W005371-W005645

Data from SNL G-657 Dodge Master Parts List. *W-80766 was a single unit with no body. Other data on the Dodge G505 main page.

WC-1 Truck, 1/2 ton, 4x4 Dodge WC Closed Cab Pickup (G505).  Hood number W-25979  confirms  WC-1 (1941 contract).
WC-1 Truck, 1/2 ton, 4x4 Dodge WC Closed Cab Pickup (G505). Hood number W-25979 confirms WC-1 (1941 contract).

Restored Dodge WC-14 on display at the Magic Valley Jeep Preservation Club Military Vehicle Show, Twin Falls, ID, 3 September 2007. Hood number W-0004035 is correct for a  WC-14 (1941 contract).  Door symbol and other markings are for the 9th Service Command, US Army.  Photo courtesy John Eickhof, owner
Restored Dodge WC-14 on display at the Magic Valley Jeep Preservation Club Military Vehicle Show, Twin Falls, ID, 3 September 2007. Hood number W-0004035 is correct for a WC-14 (1941 contract). Door symbol and other markings are for the 9th Service Command, US Army. Photo courtesy John Eickhof, owner.