For the most part the activity of the Belgian army in February, 1915, consisted of a continuous succession of advanced-post encounters, in which detachments of from thirty to forty soldiers fought with the Germans on the narrow strips of land which remained inundated, while the artillery of the contending forces bombarded the trenches and the machine-gun forts. The intermittent artillery duel continued through the forepart of February, 1915, and on February 14, 1915, the Germans bombarded Nieuport, Bains and the Dune trenches, and continued the bombardment on February 15, 1915, and again on February 20, 1915. Near Dixmude on February 28, 1915, the Belgian artillery demolished two of the German trenches, and their infantry occupied a farm on the right bank of the Yser. One of their aviators dropped bombs on the harbor station at Ostend. By the beginning of March, 1915, strips of dry land began to be seen in the flooded region; and, along these, the Belgians advanced at Dixmude and the bend of the Yser. They won additional bridgeheads on the northern bank of the river. By the middle of the month, March, 1915, the Belgians had obtained a strategical point by possessing Oudstuyvenkerke on the Schoorbakke highway. From there they could force the Germans back until they were in a position that would prevent any German action against the Dixmude bridgehead. On March 18, 1915, the Belgian army continued its progress on the Yser, and on March 23, 1915, the artillery destroyed several German observation points. A division of the Belgian army made some progress on the right bank of the Yser on March 24, 1915; while another was taking a German trench on the left bank. The almost continuous artillery fighting was more active in the Nieuport region on March 26, 1915; and farther south a farm north of St. Georges in advance of the allied lines was taken and held. But the Belgian army was unable to take any decisive action against the left wing of the German army during the spring and summer of 1915, both on account of the wetness of the land and the activity of the German artillery. Yet it harassed the Germans by so much activity that the Teutons continued to add to their heavy howitzers and large caliber naval guns. Nevertheless the Belgian strategy gained for its little army many advantages of tactical importance. It seemed to be a part of the plan of the Belgian generals to give their new troops, which were filling up the previously thinned ranks, a training under heavy bombardments without risking the lives or liberty of many of their men. They held the old cobbled roads which remained about the waters, using an almost innumerable number of trenches for that purpose.