The military police was involved in various ways in Operation Peace for Galilee, although the bulk of its duties were according to standard procedure. The corps had ample time to prepare for the operation and very specific designations were made for it as a result of the lessons learned from the Yom Kippur War ("see also: Sectors and operations during emergency"). For the first time, it met a friendly population in Lebanon, which often cooperated with the IDF - this created a need for MP presence to prevent the soldiers from making illegal dealings with the locals. Placing road signs was also a major issue, as for the first time a major city (Beirut) needed to be labeled, and enemy forces would certainly try to change the signs to mislead the IDF. To counter this, Graffiti was used on the city buildings to indicate direction.