He was awarded several decorations, among others Virtuti Militari IV class (posthumously) and V class, four times Polish Cross of Valour, Distinguished Service Order (posthumously) and Distinguished Flying Cross (twice).

[3] In February 1943 he volunteered for the Polish Fighting Team, also known as the "Skalski's Circus", attached to the Desert Air Force.

On 6 April his Spitfire Mk.IX was hit and started burning, but as he prepared to jump the wind extinguished the fire and he managed to land on an airfield.

On 12 June 1944 he shot down a Fw 190, and on 30 July one Bf 109 individually and one with his wing man (counted as 0.5 'share').

[11] On 18 August 1944 Horbaczewski led his squadron of 12 aircraft over France on a 'Rodeo' mission, despite being ill with flu.

The squadron, using the element of surprise, attacked a group of 60 Fw 190s of Jagdgeschwaders 2 and 26 over an airfield near Beauvais.

Virtuti Militari IV class (posthumously) Virtuti Militari V class Cross of Valour (Poland) 4 times Distinguished Service Order (posthumously) Distinguished Flying Cross (United Kingdom) and bar