Charles Delioux was a prolific composer of virtuoso piano pieces in the 19th century. This work is a fiery, dramatic piece characterized by intense shifts in dynamics and powerful chordal passages.
At Henle 5 this is a late-intermediate piece — technically substantial, with musical demands to match. The main demands: sharp dynamic and character contrasts held together in one arc; fast passage work that stays light and even at tempo; and octave passages that demand a relaxed wrist to avoid tension.
Beyond that, expect big chords that need weight without harshness.
Focus on the projection of large chords and the dramatic phrasing of the melodic lines.
Comparable difficulty and character — good candidates for what to learn next.
A level or two down with the same spirit — ideal if this piece is still out of reach.
Where this piece's skills lead: slightly harder works making similar technical demands.
Lesser-known works by the same hand, at a comparable level.
Cri de guerre (Op.30) is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 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 Cri de guerre (Op.30) lasts about 5 minutes.
Cri de guerre (Op.30) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.
Pieces at a comparable difficulty and character include Bonheur passé by Charles Delioux, Ballade by Samuel Coleridge-Taylor, Bohaterowi! by Karol Kurpiński — see the full similar-pieces list on this page.