jackboots. Semi-formal (kleiner Gesellschaftanzug) and walking-out (Ausgangsanzug) uniforms were as full-dress, but without aiguillette and with ribbons replacing medals. Production and issue of the Waffenrock was suspended in 1940, and either the service or the officers' ornamented uniform was worn for dress occasions instead. However, the Waffenrock remained authorized for walking out for those who had or could purchase it; and it was a widespread if unauthorized practice to loan a soldier a Waffenrock from regimental stocks to get married in, as evidenced by many wartime wedding photos. Großdeutschland specific A Waffenrock uniform was designed specifically for the Infantry Regiment Großdeutschland, however they were never widely issued and were placed in storage awaiting the end of the war. Officers' ornamented uniform (M37) In 1937 officers were authorized the optional purchase of the "ornamented" (ornamentierte) or "piped" (mit Vorstössen) uniform, to be worn as a less-formal alternative to the Waffenrock for walking-out and some ceremonial occasions. The M37 Feldbluse was identical to the M35 service tunic, save that the collar and its Litzen were the same as the Waffenrock, and collar, closure and cuffs were piped in Waffenfarbe. It was worn with the piped dress trousers. From 1940 the M37 replaced the Waffenrock for formal and ceremonial dress. Summer white tunic Officers and certain senior NCOs had the option of wearing a white cotton tunic from April through September. The Reichswehr "old-style" (ältere Art) model had a stand collar, a six-button front, and plain sleeves; it was authorized for barracks wear, supervising training, and attending sporting events. The newer model introduced in 1937 had a rise-and-fall collar, an eight-button front, and French cuffs, and was authorized as a summer walking-out and undress uniform. Both versions had removable buttons, shoulderboards and metal breast eagle in order to permit laundering; collar insignia was not worn. Panzer uniform The Panzer uniform ( ) consisted of black wool hip-length double-breasted jacket and trousers, with skulls on the collar patches instead of Litzen and, officially until 1942, collar piping in Waffenfarbe (usually the rose-pink of the armor branch, but also gold for former cavalry units in the reconnaissance role or black/white twist for combat engineers). The color and Totenköpfe (skulls) were chosen due to their similarity to the uniforms of August von Mackensen's Black Hussars, and also for practical reasons: the black color made oil stains less visible and a short jacket was less likely to