If you want to field a comprehensive war fighting capability to need a diverse assortment of equipment big and small, from bullets to aircraft carriers and everything in between. The United States Military has such a range of weapons.
Galaxies range in size from dwarf galaxies little more than 100 light years in diameter up to giant elliptical galaxies that are millions of light years across. Here are the largest known galaxy, one of the smallest and fifteen more in between.
Earth is not alone in having mountains. Earth doesn't even have the largest mountains in the Solar System. Those belong to plantetoids that are smaller than the Earh's. Here is a collection of the larger mountains in the Solar System shown to scale for comparison.
Wave heights of some notable tsunamis are compared. Suprisingly, tsunamis comparable to and even higher than the one caused by the Chicxulub impact have occurred in the past century.
Here's an assortment of some of the better known rocks that drift in space not to far from Earth including a couple Hollywood creations form the movies and a few that that failed to remain in space leaving magnificent craters here on Earth. For perspective they are presented against the background of puny New York City and the Chelyabinsk and Tunguska asteroids.
Here are some of the more notable impact craters on Earth and Solar System objects with visible surfaces. If you think Chicxulub that killed the dinosaurs was a big one you're in for some surprises.
As long as people have sailed the seas there have been shipwrecks. Here are just a few of them with known locations and a few airplanes. Depths and sizes are graphically represented along with the years they sank. There all types of ships of all sizes from all over the world over the past four thousand years.