When the Swiss mercenaries in French service did not receive their pay, however, they demanded an immediate battle, and Lautrec was forced to attack Colonna's fortified position in the park of the Arcimboldi Villa Bicocca, north of Milan.
Namun, ketika tentara bayaran Swiss yang disewa oleh Prancis tidak menerima bayaran, mereka meminta pertempuran segera diadakan, dan Lautrec terpaksa menyerang posisi Colonna yang telah diperkuat pertahanannya di taman Arcimboldi Villa Bicocca, Milan utara.