Reich troops in the war with Ottomans 1663-64

German states provided a significant amount of troops to Emperor in 1663-64 (both Kreis & Auxiliary troops):
Bavarian Circle:
- regiment zu Fuss GWM Ferdinand Freiherr von Puech (10 coys, 1420 men; coys 1-7 were from Bavarian von Puech regiment)
- squadron zu Pferde Nicola (Oberstleutanant Nicolaus Honing; 3 coys, 300)
In addition Salzburg provided Emperor an auxiliary regiment zu Fuss under Oberst Johann von Flettingen (7 coys of 150 men each; 6 - from Salzburg & one from Passau)
Burgundian Circle
- regiment zu Fuss Oberstleutanant Jean Geys (12 coys, 900)
- regiment zu Pferde Oberstleutanant Caspar Casimir von Hardunck (10 coys, 600)
Both regiments were raised by Markgraf von Baden und Hochberg.
Franconian Circle

Imperial army under Montecuccoli entered Transilvania, August 1661

In August of 1661 Emperor Leopold I sent an army under FM Raimundo Montecuccoli in Transilvania to support Janos Kemeny (see Wiki for more details). It consisted of 16 regiments zu Pferd, one of Croats, 6 Frei-companies & 15 regiments zu Fuss in 3 Corps:

• Feldmarschall-Leutenant Johann Reichard graf Starhemberg: 2 regiments zu Pferd (Heister, Knigge) & 4 regiments zu Fuss (Johann Reichard Starhemberg, Ludwig Raduit Souches, Otto Wallis, Cobb) 
• Feldmarschall Raimundo Montecuccoli: 9 regiments zu Pferd (Raimund Montecuccoli, prince Ruppert, Pfalzgraf von Simmern-Zweibruckn, Iohann Sporck, Franz Scheidau, Clemens Caprara, Fabri, Peter Buschieri, Mainz regiment under Bosfeld), one of Croaten (Souschentz), 3 Bavarian Frei-companies under Obrist-Leutenant Nikolaus Honning, 5 regiments zu Fuss (Markgraf Leopold Wilhelm von Baden, Peter Strozzi, Cobb, Bavarian regiment Puech of 8 coys, Coln regiment Roist of 11 coys) 
• Feldzeugmeister Ludwig Raduit Souches (Komorn): 5 regiments zu Pferd (GFWM Sigmund Friedrich graf von Gotz, Schaaf, Enea Silvio graf Piccolomini, Bernhard Walther, Beichere), 3 Kurmainz Frei-company, 6 regiments zu Fuss (La Cron, Adolf Buchheim, Franz de Mercy, regiments from Munster, Mainz & Wurzburg) 

Their campaigns of 1661-62 were a prelude to the Austrian-Turkish war of 1663-64.

Source: Staudinger's Geschichte des bayerischen Heeres: Geschichte des kurbayerischen Heers insbesondere unter Kurfurst Ferdinand Maria 1651-1679. SS. 494-495.