Probably the classic if you've not already read it is the Cornelius Ryan one. The film was based on it and is very accurate. I have the osprey campaign titles on the battles but haven't read yet. Similar theme, The Day The Devils dropped in is excellent. Covers the drops around Pegasus bridge on d day and the battles following. The osprey raid on Pegasus is also good. Been hoping for one on the Merville Battery for a while, d days other and bloody raid.
"That's right son, join the navy. Get behind a bloody big gun and knock the hell out of somebody"
"We went out, got our arses kicked, then came back again"