The government had issued new calls for troops, and in April no less than twenty-five thousand men were raised. Martinez Campos came over from Spain, arriving at Santiago on April 16, and went at once to Havana, where he relieved Calleja as captain-general. Campos was a veteran, and expected to crush the insurrection at once, but day by day his task grew more difficult. Gomez and Maceo, instead of being driven hither and thither, led Campos a dance, and he was prevented from solidifying the two trochas he had formed. Gomez never attempted pitched battles or sieges, but harassed the enemy in every way possible, cutting off their convoys, picking them off in detail, getting up night alarms, and in every way annoying them. His hardened soldiers, especially the negroes, could stand hardships and still keep in good fighting condition, but with the Europeans, what between yellow fever and the constant alarms of war, it was a different story. No European soldier could live under the hardships and exposures which seemed to put life into the negro soldiers. NO CASTE PREJUDICES. It must be understood that there is no caste feeling between the negro and the pure-blooded Cuban. They march, eat and sleep side by side. Moreover, the negroes make excellent soldiers, with finer physique than the Cubans themselves, and equal powers of endurance. The Cuban is small in stature compared to the American soldier, but he is well set up, wiry, and apparently has unlimited staying powers. He frequently lives on one meal a day, and that a poor one, but he shows no signs whatever of being ill-fed; in fact, he seems to thrive on it, and he has an uncomfortable habit of marching six hours in the morning on an empty stomach, which would be fatal to the ordinary Anglo-Saxon. About the first of July, Maceo, still in the province of Santiago, concentrated the forces in the Holguin district and moved against Bayamo, capturing one provision train after another that were en route to that place. Campos took fifteen hundred men, with General Santocildes second in command, and went to the relief of Bayamo. About the middle of July he was attacked several miles from Bayamo by Maceo with twenty-seven hundred rebels. He and his entire staff narrowly escaped capture, and only the bravery of General Santocildes averted this catastrophe. The brave general lost his life and the Spaniards were forced to fly, after having fought for five hours, surrounded on all sides by the rebels. They finally made their escape to Bayamo, the rear guard covering their retreat with great difficulty.