Constantine and Christianity

Before Constantine, Christianity was a fairly underground religion. It had much less followers then other religions in the area and it was fairly new. This made it look like a cult. If you were Christian it was mostly frowned upon. Especially in Rome. Soon news of this cult had reached Constantine. He probably knew a little bit about it but he probably did not care. Until that fateful day. He was leading an army into a battle but he wasn't sure he should pull through and fight. Then he looked into the sun and apparently saw a cross. He ordered all his men to nail crosses to their shields and start attacking. He won the battle and took it as a sign from God. He made Christianity the official religion of rome. 

There is some controversy though if Constantine was fully behind Christianity. He did not attempt to wipe out the old religion. He said that if people wanted to worship old Gods then they could. Also he did not convert until he died. This could mean a few things. He did not fully believe in Christianity or he wanted to remain neutral until he died so he could prolong his rule.