Czechoslovak Army Czechoslovak Air Force French Air Force Royal Air Force Czechoslovak War Cross Československá medaile Za chrabrost před nepřítelem Československá medaile za zásluhy, 1st Class Pamětní medaile československé armády v zahraničí Officer of the Order of the British Empire 1939–1945 Star with Battle of Britain clasp Defence Medal War Medal 1939–1945 Ján Ambruš, OBE (19 May 1899 – 2 January 1994) was a Slovak aerobatics and fighter pilot.

[citation needed] In the First World War Ambruš studied at the Hungarian Ludovica Military Academy in Budapest.

[citation needed] Ambruš was commissioned into the Royal Air Force Volunteer Reserve as a Pilot Officer.

Over the Irish Sea Ambruš mistakenly led the flight to attack two Bristol Blenheim Mk IF light bombers of No.

One Blenheim, L6637, code letters RO-S, crashed into the sea off Point of Ayre on the Isle of Man and not far from the Morecambe Bay light ship.

The other Blenheim, L7135, code letters RO-S, survived with minor damage and returned safely to RAF Ternhill in Shropshire with its crew unharmed.

In 1942 he was promoted to Wing Commander and posted to Canada, where he was Air Attaché at the Czechoslovak Embassy in Ottawa till the end of war.

He worked as a design engineer, planning for highways, airports, air-pollution control systems and chemical plants.