This early work by Schubert is a dramatic and energetic piece, likely composed around the time of his more significant sonatas. It showcases a youthful exuberance and a developing sense of dramatic contrast.
Focus on clear articulation and dynamic control to bring out the dramatic contrasts.
Auf den Sieg der Deutschen (D.81) is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7.
You should be comfortable at Henle level 5 — meaning you can already play level 4–5 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of Auf den Sieg der Deutschen (D.81) lasts about 3 minutes.
Auf den Sieg der Deutschen (D.81) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.