President Reagan was a Democrat long after WWII. I grew up in California when he was governor.
I lived under Republican Governor Reagan also.
You are making a mistake to go back to WWII, and a time long ago, in a world far, far, away, of the 1930s and 40s, to attack Reagan to protect the current liberal candidate Romney, who was anti-Reagan and anti-conservative, and who was only 1 year old, the the last time Reagan made a vote for a democrat president, in 1948.
Romney came along when Reagan was emerging as a conservative leader, and then Romney left the party when Reagan took over the party and was becoming president, Romney is a post 1960s pro-abortion liberal, not a WWII era democrat.