There were reports of South Korean forces capturing Haeju in the first few days of the war, and some people have proposed that this implied the South Koreans started the war. While this may be uncertain (the idea of some sort of exchange of fire certainly being a possibility), what is less uncertain is the fact that the fully-prepared Korean People's Army was able to invade within an hour across multiple areas of the border in response while Republic of Korea forces were unprepared and mostly unable to resist the North Korean attack. Considering that the Soviet Union took several days to be able to respond to the first stages of Operation Barbarossa just under a decade before, one would think it slightly odd why the attacked party already had their entire military on a war footing and prepared for invasion, while the supposedly attacking side would be completely unprepared for war. One cannot help but draw a comparison to Hitler's invasion of Poland.