[note 1] In 1789, Rosselmini assumed command as oberst (colonel) of the Austrian Kaiser Infantry Regiment Nr.

[4] Rosselmini led the Leib and Colonel (2nd) Battalions of the Kaiser Regiment in Dagobert Sigmund von Wurmser's Army of the Upper Rhine, fighting at Insheim and Bad Bergzabern in the Bienwald on 12 and 20 September 1793.

[5] The Kaiser Regiment also fought actions at Neuwiller-lès-Saverne, Bouxwiller, Uttenhoffen, and Reichshoffen, which were collectively part of the Battle of Haguenau.

[6] The Kaiser Regiment transferred to the Austrian Netherlands front in 1794, but it is not clear when Rosselmini's prisoner exchange took place or where he served in 1794–1795.

[1] In April 1796, during the Montenotte Campaign in Italy, Rosselmini commanded a brigade in Feldzeugmeister Johann Peter Beaulieu's Austrian army.

[9] During the Austrian retreat at the beginning of May, Rosselmini's brigade covered the army's left flank by withdrawing through Tortona and marching east to Voghera on the south bank of the Po River.

The local Austrian commander, Feldmarschall-Leutnant Karl Philipp Sebottendorf decided to hold his position until nightfall.

Harassed by French artillery and skirmishers, and assaulted by a column of infantry, the Nádasdy and Croat battalions fell back, abandoning the cannons.

[14] On 16 May, Beaulieu assigned the brigades of Mathias Rukavina, Vukassovich, and Rosselmini to join the defenders of the Mantua fortress.

[18] During the third relief of Mantua, Rosselmini commanded one of four brigades in Giovanni Marchese di Provera's Main Body.

This was part of the 26,432-man Friuli Corps, which was personally accompanied by the new Austrian army commander, Feldzeugmeister József Alvinczi.