Western militaries training Ukrainian troops for war with Russia can’t rely on the usual cycle of periodically updated manuals because battlefield lessons are changing too quickly, a NATO commander told Business Insider.

Norway is leading multinational training for Ukrainian troops at Camp Jomsborg, a purpose-built camp in eastern Poland, as part of Operation Legio. The training needs constant updates about the tactics and weaponry that work on the rapidly changing battlefield, Brigadier Atle Molde, the commander of Task Force Legio, told Business Insider.

“You cannot do that based on bureaucratic training manuals issued once a year or stuff…