ns had been mining toward Italian advanced positions. During
the night the Italians exploded a countermine, which destroyed the
Austrian gallery. The edge of the crater was occupied by Italian
troops and the position established. On the Julian front artillery
duels were reported in the Plava area, to the east of the Vertoibizza
Torrent and in the northern sector of the Carso. The Italians repulsed
minor attacks in the vicinity of Della Tolmino, and against the
position which they had captured on April 7, 1917, north of Boscomalo.

On April 13, 1917, the railway station at Calliano and moving trains
in the neighborhood were repeatedly hit, an ammunition depot was blown
up, and a fortified position destroyed in the Zugna area. On the
remainder of the Trentino front bad weather interfered with all
operations.

On the Colbricon Massif, in the upper Cismon, Austrian detachments
attempted to attack the position which the Italians had captured on
the preceding night after the explosion of their mine. They were
repulsed with loss. On the Julian front artillery duels took place in
the Goritz Basin.

Again on April 16, 1917, Italian artillery in the Lagarina Valley
renewed the bombardment of the station at Calliano, damaging the
building, putting trains and motor lorries to flight and dispersing
troops. Encounters among small groups of infantry were reported.

In the upper part of the Aravionodo Valley in the midst of a heavy
storm an Austrian detachment made a surprise attack and penetrated one
of the advanced Italian positions west of Lake Bocete. They were
driven back to their own lines. On the Julian front the artillery
fighting was more intense in the vicinity of Goritz.

Bad weather once more interfered seriously with all operations for a
few days. On April 20, 1917, however, there was again lively artillery
fire on the whole front. Italian batteries shelled Austrian camps in
the Lagarina Valley, dispersed Austrian detachments on the northern
slopes of Monte Pasubio and at various points on the Carnia front, and
checked Austrian fire in the Goritz area and on the Carso.

For the next two days only artillery duels were reported. These were
continued on April 23, 1917, in the Sugana Valley, where extensive
movements of troops behind the Austrian lines were reported. In the
upper Cordevole Valley an Austrian detachment, which attempted to
penetrate one of the Italian positions in the Campo zone, was
counterattacked and