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"Yankee Division"
During World War I., a press conference of Boston newspapermen was called by the Commanding General to determine a nickname for this division, which had just been inducted from New England National Guard units. The adopted suggestion was, "Call it the 'Yankee Division' as all New Englanders are Yankees", and a dark blue monogrammed 'YD' on an olive drab background was officially designated as the division insignia.
The W.W.II 26th Infantry Division flag
Shoulder patch: Khaki colored, in the shape of a diamond.
In the center, in blue are the letters "Y" and "D" in the form of a monogram.
LIEUT. GEN. Willard Stuart Paul (USA ret.)