After the expedition down the lake, General Lawton went on "The North Line." So let us now turn thither also. For wherever Lawton was, there was fighting. In the latter half of April, General MacArthur advanced north along the railroad, and took Calumpit, where the railroad crosses the Rio Grande, on April 28th. This was the place where under cover of "the accurate concentrated fire of the guns of the Utah Light Artillery commanded by Major Young" [220] a few Kansas men with ropes tied to their bodies swam the river in the face of a heavy fire from the enemy, fastened the ropes to some boats on the enemy's side, and were pulled back in the boats, by their comrades, to the side they had come from; the Kansans then crossing the river under the lead of the gallant Funston, and driving the enemy from his trenches. The desperate bravery of the performance, like so many other things General Funston did in the Philippines, was so superb that one forgets how contrary it was to all known rules of the game of war. If it was Providence that saved Funston and his Kansans from annihilation, certainly Providence was ably assisted on that occasion by Major Young and his Utah Battery. [221] Shortly after this General MacArthur entered San Fernando, the second insurgent capital, which is forty miles or so up the railroad from Manila. During the month of May General Lawton kept the insurgents busy to the east of the railroad, between it and the Pacific coast range, taking San Isidro, whither the third insurgent capital was moved after Malolos fell, on May 17th. Here he made his headquarters for a time, as did General MacArthur at San Fernando. It had been supposed that practically the whole body of the insurgent army was concentrated in the country to the north of Manila, but this proved a mistake. They now began to threaten Manila from the country south of the Pasig. Says General Otis: The enemy had become again boldly demonstrative at the South and it became necessary to throw him back once more. [222] General Lawton was directed to concentrate his troops in the country about San Isidro, turn them over to the command of some one else, and come to Manila to organize for a campaign on the south line. The details of this expedition belong to a military history, which this is not. The expedition left its initial point of concentration near Manila on June 9th. Its great event was the battle of Zapote River on June 13th. Along this river in 1896 the insurgents had gained a great victory over the Spaniards. They had trenches on the farther side of the river which they deemed impregnable. General Lawton attacked them in these intrenchments June 13th. At three o'clock that afternoon he wired General Otis at Manila giving him an idea of the battle and stating that the enemy was fighting in strong force and with determination. At 3:30 o'clock he wired: We are having a beautiful battle. Hurry up ammunition; we will need it; and at 4 o'clock: