Contributed lightly armed infantry units retreating from Dutch territory. Also committed the Dutch Air Force on few, ineffective and costly missions. Gunsburg 1992, hlm. 216. Gunsburg, Jeffrey A. (April 1992), "The Battle of the Belgian Plain, 12–14 May 1940: The First Great Tank Battle", The Journal of Military History, 56 (2): 207–244, doi:10.2307/1985797
