| Unit Name: | 1st Lithuanian Fusilier Reserve Battalion |
| Dates: | 1813 March 1 - July 1 (as a separate Battalion) |
| Country: | Kingdom of Prussia |
| Battles: | Napoleonic Wars |
| Commander1: | Major von Lettow |
| Commander1 Label: | First commander |
The 1st Lithuanian Fusilier Reserve Battalion (; or) was a fusilier battalion of the Royal Prussian Army formed by Lithuanians.
Ludwig Yorck von Wartenburg marched into Königsberg on 8 January 1813 and immediately declared the mobilisation of all remaining able-bodied men. First, he called all the Krümper and recruits, which von Bülow had left to the east of the Vistula. So, Yorck created a large training camp to train the new soldiers. On March 1, seven reserve battalions were formed, which were the:
The 1st Lithuanian Fusilier Reserve Battalion was formed in Königsberg, under the command of Major . Major von Lettow was from the 2nd West Prussian Infantry Regiment. The battalion was supposed to have 60 Non-commissioned officers, 13 musicians, 4 surgeons, and 728 Gemeiner.
At the end of May, this battalion was in Cottbus. Under the same commander, the unit fought in the Battle of Luckau on June 4.
The unit retained its name until July 1. Then, on 1 July 1813, this and other reserve battalions were concentrated into various reserve regiments. The 1st Lithuanian Fusilier Reserve Battalion was made the 1st Reserve Infantry Regiment's 3rd, i.e. Fusilier, Battalion. At the time, the unit was commanded by Major von Röming.
After Napoleon was defeated, the Prussian Army was reorganized, and so the 1st Reserve Infantry Regiment became the 13th Infantry Regiment on 1 March 1815.