On May 18, 1943, Adolf Hitler launches Operation Alaric, the German occupation of Italy in the event its Axis partner either surrendered or switched its allegiance.
This operation was considered so top secret that Hitler refused to issue a written order. Instead, he communicated verbally his desire that Field Marshal Erwin Rommel should assemble and ultimately command 11 divisions for the occupation of Italy to prevent an Allied foothold in the peninsula.
