The Unknown Soldier is the tenth studio album by English folk / rock singer-songwriter and guitarist Roy Harper.

[2] Half of the tracks were co-written with David Gilmour of Pink Floyd, who also plays guitar on the album.

[5] Originally, the songs "I'm in Love with You", "Ten Years Ago" and "The Flycatcher", were to be released on the proposed earlier (1978–79) Harper album, Commercial Breaks.

Perhaps the most remarkable moment in...the making of this record was the trip... to the battlefield at Verdun in France to take the pictures for the sleeve...disembarking at Boulogne in an undrivable hired Rover with an arse-end three miles in the air and a steering wheel on the wrong side.

We hurtled down France for half a day...at the end of which we walked, stoned and soaked, into a Pension and I asked for a room for the night in my schoolboy French.