The first Soviet all-metal fighter, the I-4, was first produced as a sesquiplane but later examples, as illustrated here, dispensed with the lower wing.

The Thulin K, which was primarily used by the Dutch Navy, some being tested with a 20-mm Madsen cannon.

The Toloche achieved limited production for the Mexican Army in the mid 'twenties.

The Toloche achieved limited production for the Mexican Army in the mid 'twenties.

A three-view drawing of the Thomas Morse XP-13

The outbreak of civil war in Mexico in 1919 put an end to development of the TNCA Microplane

Japan's first fighter of indigenous design, the Koshiki-2 appeared to owe much to the Spad S.XIII and Salmson 2 A1 fighters.

Design of the Tomashevich 110 put much emphasis on ease of manufacture and of field maintenance.