This is the classic Forestry cutlass worn by senior Foresters (denoted by the ivory grip and the gold/green knot) across Europe from the early 18th century onwards. They continued in use through the Weimar era and Third Reich, only latterly losing the by-knife. Lower ranks wore cutlasses with a stag horn grip and a plain green knot.

This hanger is almost certainly of German origin, probably the Oels family of Brunswick (the hereditary dukes) because of the presence of the gold 'O' featured in four places on the mounts. An unusual feature is the ovoid pommel, similar to that of a smallsword of the period.

These dirks would have been carried by Royal Navy as well as merchant marine officers, even, rather more rarely, by army officers. This classic dirk has a whalebone haft (which, at first glance, might appear to be of walrus ivory, but on closer inspection is definitely whale bone) and iron mounts. The style of hilt, pommel and grip dates it.

This is the bayonet for the .451 muzzle-loading Whitworth rifle. In extensive trials these were issued in 1863-67 to infantry units, including various guards and rifle regiments. Some 8,000 bayonets were produced, the general scale of issue being some 68 rifles and bayonets per regiment. The 2nd Battalion 60th were in the Maori Wars 1860-70.

The hilt could be Dutch or French, the use of tortoiseshell having been introduced to Europe in the late 17th century, probably through Dutch colonial connections. The mid 18th-century German blade (26" long) would have replaced an earlier, shorter, straight, double-edged blade (broken?), probably to enable the weapon's use as a naval hanger.