Wenzel Joseph von Colloredo-Mels und Wallsee (15 October 1738 – 4 September 1822) served in the army of Habsburg Austria from the middle to the end of the 18th century.

During the War of the First Coalition he led troops at Neerwinden, Raismes, Famars, Caesar's Camp, and Maubeuge.

After fighting in several more actions, he was appointed Oberstleutnant (lieutenant colonel) of the Waldeck Infantry Regiment Nr.

He replaced his brother Joseph as Oberst (colonel) of the Lacy Infantry Regiment Nr.

[4] In June 1789, he commanded a division in Field Marshal András Hadik's main army.

[9] At Neerwinden, Colloredo commanded the Second Rank of the Main Body, a force of 6 battalions and 10 squadrons.

[3] In an action preliminary to the Battle of Raismes on 1 May 1793, the French attacked the Coalition army covering the Siege of Condé.

One French column under François Joseph Drouot de Lamarche set out from Curgies.

When the French soldiers encountered Austrian cavalry led by Colloredo, they panicked and fled.

He sent 16 battalions, 18 squadrons, and 38 position guns under Frederick, Duke of York and Albany in a wide sweep around the French right flank and 12 battalions, 12 squadrons, and 23 position guns under Joseph de Ferraris on a narrower sweep.

[12] Colloredo's force was named the First Small Column and included one battalion each of the Austrian Infantry Regiments Beaulieu Nr.

The French army, now under Charles Edward Jennings de Kilmaine, faced eastward in an entrenched position called Caesar's Camp between Cambrai and Bouchain on the Scheldt River.

Coburg sent two columns with a combined strength of 16,000 men under François Sébastien Charles Joseph de Croix, Count of Clerfayt and Colloredo to start from Hérin and attack the French defenses along the Scheldt.

Meanwhile, Coburg ordered York and 25,000 troops to start from Villers-en-Cauchies and make a wide sweep to the south of Cambrai to strike the French right rear.

The Battle of Caesar's Camp on 8 August ended when Kilmaine saw the danger of being trapped and withdrew west toward Arras and Douai.

Ludwig von Terzi's division was made up of two battalions each of Infantry Regiments Stein Nr.

Karl von Lilien's division consisted of six squadrons each of the Coburg Dragoon Regiment Nr.

[17] During the Siege of Maubeuge, Colloredo commanded the 16 battalions, 10 companies, and 8 squadrons, altogether 14,000 Imperial troops, that invested the city on the south bank of the Sambre River.

The Allied cause was not helped when Orange refused to allow any Dutch soldiers to cross to the south bank.

After heavy fighting in the Battle of Wattignies on 15–16 October, Coburg abandoned the siege and withdrew the Coalition army.