Screengrab from video released by US army. Image: US army/Twitter

The US Army posted a St Patrick's Day video on its social media channels today, along with the captions "We appreciate how everyone wears a little green like us today" and "We wear green everyday in the US Army".

The US army raised eyebrows on Twitter on Saturday when it released a bizarre video celebrating St Patrick’s Day.

The video, which appears to be mostly taken from training footage, begins with a helicopter firing shamrock missiles and things only get weirder from there.

The tweet posted on the official US army page at 1pm Irish time attracted lots of criticism with some calling it “revolting” and propaganda and demanding it be deleted.

The video is accompanied by the message “Happy #StPatricksDay from the #USArmy. We appreciate how everyone wears a little green like us today.”

It has been retweeted more than 1,600 times.