on with
the artillery--Lieutenants Lewis and James. Donald Swain Lewis had
joined the Royal Engineers in 1904, and, after qualifying as a pilot in
May 1912, had transferred to the Royal Flying Corps in December 1913. By
example and precept he had done all that he could before the war to
adapt wireless telegraphy to the uses of the Flying Corps and to
convince others of its necessity. Before the battle of the Aisne ended
he had won his victory. He was in the habit of going out alone in a B.E.
machine, piloting the machine and operating the wireless at the same
time. A brother-officer noted of him in a diary: 'Lewis, R.E., came in
from spotting with his machine shot full of holes; I believe he likes
it!' Later on in the war, at home and in the field, he continued his
work. In April 1915 he was appointed to command No. 3 Squadron, in
succession to Major J. M. Salmond, and did much to maintain and advance
the great reputation of that pioneer among squadrons. After a spell at
home during the winter of 1915-16, he returned to France in February
1916, to command the Second Wing, co-operating with the Second Army in
the Ypres salient. By this time he held the rank of lieutenant-colonel,
but he continued to fly over the enemy lines. On the 10th of April 1916,
flying a Morane parasol, east of Wytschaete, with Captain A. W. Gale, an
officer of the Trench Mortars, as passenger, he was brought down by a
direct hit from the enemy's anti-aircraft guns. He had been showing
Captain Gale some of the objectives on which the trench mortar fire had
been directed during the week, and was killed in action while he was
carrying out the duties of that artillery observation which he had done
so much to perfect.

Baron Trevenen James had been a mathematical scholar and head of his
House at Harrow; in 1907 he passed into Woolwich, and two years later
was commissioned in the Royal Engineers. He was early interested in
aviation; in June 1912, after only three days' practice, he obtained the
Royal Aero Club certificate at Hendon, flying a Howard Wright biplane.
In April 1913 he joined the Military Wing of the Royal Flying Corps, and
was at once employed in carrying out experiments with wireless. In
December 1913 he was joined by Lieutenant Lewis, and the two became
famous for the theory and practice of their craft. On the outbreak of
war Lieutenant James was attached to No. 4 Squadron for wireless duties;
when in September 1914 the headquarters wirel