Thomas Benfield Harbottle, Dictionary of Historical Allusions
“ A treaty between Spain and the French Directoire, signed in 1794, providing that either Power, in the case of one or the other being attacked, should provide for its ally material aid in the shape of fifteen ships of war, and a land contingent of 24,000 men. This provision, however, was not to apply to the war in which France was then engaged, excepting only in the case of England, against whom Spain, having grievances of her own, was prepared to take up arms at once. ”
