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Why were Rif forces unable to defeat the combined French and Spanish offensive?

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Spanish soldiers operate artillery cannons in a desert landscape near Melilla, with smoke billowing as a cannon fires during a 1930s battle. — Rif War Spanish artillery firing outside Melilla during the Rif War.

Rif forces were unable to defeat the combined French and Spanish offensive primarily due to the overwhelming disparity in manpower and the application of advanced military technology by the two colonial powers.12

While Rif fighters under Abd el-Krim had previously achieved significant successes against isolated Spanish and French positions, their decision to expand the conflict into the French protectorate in 1925 proved to be a strategic turning point. This move forced the two European powers to coordinate their military operations, effectively ending their separate, often ineffective, campaigns.123

By September 1925, the alliance launched a massive joint offensive. Spain landed approximately 18,000 troops at Alhucemas Bay, while France deployed roughly 20,000 troops from the south. In contrast, the Rifian forces were significantly outnumbered, with their strength estimated at no more than 13,000 men. Faced with this superior combined force and modern military technology, the Rifian resistance was systematically dismantled, leading to the surrender of Abd el-Krim in May 1926.12