J. Douglas Blackwood, hull DE-219, belonged to the Buckley class of destroyer escorts. Philadelphia Navy Yard laid her down on 22 February 1943 and launched her on 29 May 1943. The Navy commissioned her on 15 December 1943. Her first commanding officer was Commander Ralph Baker Randolph.
Her Pacific duty took her to Majuro and the Admiralty Islands. She was credited with 3 battle stars.
Her commissioned service ended on 20 April 1946. The Navy later expended her as a target.
