From Lake Narotch down to the Pripet Marshes the Russians maintained a lively cannonade at many points without, however, making any attacks in force. During March 23, 1916, a determined Russian attack against the bridgehead at Jacobstadt broke down under the heavy German gunfire.
Northwest of Jacobstadt, near the village of Augustinhof, a most violent attack brought no results. Northwest of Postavy the Russians stormed two trenches. Southwest of Lake Narotch repeated heavy attacks were repulsed and some West Prussian regiments recovered an important observation point which they had lost a week before. Over 2,100 officers and men were captured that day by the Germans.
On the same day German aeroplanes attacked the important railroad junction at Lida on the Kovno-Vilna railway, and also Vileika on the railway running parallel to and east of the Warsaw-Vilna-Dvinsk-Petrograd railroad. In a way this signified the opening of the German offensive against Vilna. Concurrent with it the fighting on the Dvina between Friedrichstadt and Jacobstadt waxed more furious.
By April 5, 1916, the German artillery fire before Uxkull had spread to Riga and Jacobstadt, as well as to many points in the Dvinsk sector. Floods were still rising everywhere and the ice on the Dvina began to break up. Again on April 7, 1916, the German guns thundered against the Russian front from Riga down to Dvinsk.
The points selected for these efforts are almost equidistant on the right flank of the Riga front, near Jacobstadt, and south of Lake Drisviaty, where the enemy's maximum activity synchronized with General Lechitsky's greatest successes on the southern front.... "On the southwestern front all eyes are now focused on General Lechitsky's rapid advance on Zaleszcyky and Czernowitz.
According to the German War Office more than 1,300 Russian prisoners were taken. Simultaneously with this partial relief in the south Field Marshal von Hindenburg began an attack at several points against the Russian right wing and part of the center. He penetrated the czar's lines at two points near Jacobstadt, halfway between Riga and Dvinsk, and at Kochany between Lake Narotch and Dvinsk.
The blow was struck at Friedrichstadt, where the river is crossed by the only practicable road between Riga and Jacobstadt, but the design was to turn the whole front as far as Dvinsk; and Von Buelow held out to his troops the alluring prospect of winter quarters in Riga and a march on Petrograd in the spring.
On the Dvina and in the Jacobstadt region there was an artillery and rifle duel. German aeroplanes were making frequent raids on the Russian lines. They dropped sixty-eight bombs during a nocturnal raid on the town of Dvinsk on June 27, 1916. The damage both to property and life was considerable. An attempt on the part of German troops to take the offensive south of Krevo was repulsed by gunfire.
Between Jacobstadt and Dvinsk a Russian battery succeeded in reaching a German munition depot and with one well-placed hit caused havoc among men and munitions. Southeast of Lake Med a surprise attack, carried out by comparatively small Russian forces, resulted in the capture of some German trenches.
Near Jacobstadt, Dvinsk, and Smorgon, along the Stokhod, and from the Zlota Lipa to south of the Dniester, the artillery activity increased considerably. Advances and reconnoitering operations often led to local engagements. Near Novica, on the Lomnitza front, new strong Russian attacks were repulsed with sanguinary losses.