Yes. There would often be two horns and two trumpets. Trombones were added in the late Classical period. The tuba wasn't invented until the 1840s, well into the Romantic era.
acoustically
String Instruments
The actual count and type of woodwinds instruments required in an orchestra is determined by the composer of the piece. Not every single woodwind instrument is used in every single classical piece.
The orchestra saw a complete upheaval in the Classical period. Here are what I think would be the three most important: Firstly, conductors got off their harpsichords and began conducting in the modern style with a stick. Before that, they simply outlined the tune and held the timing together with a continuo. Next, the instrumentation changed. Recorders fell out of use, being replaced by the modern transverse flute. Clarinets were also first introduced to the orchestra in this time. Finally, the locations and sizes of orchestra began to change. They moved out of courts and private locations where they were restricted in size and grew into much larger orchestras, suited for opera houses and concert halls.
Oh, honey, bands are like a musical free-for-all compared to orchestras. You've got guitars, drums, keyboards, and even the occasional cowbell making an appearance. Basically, if it makes noise and can be carried on stage, you'll probably find it in a band.
acoustically
The main difference between band and orchestra instruments is the type of music they typically play. Band instruments are often used in marching bands and concert bands, playing a variety of music genres. Orchestra instruments are used in symphony orchestras, playing classical music. Additionally, band instruments usually have a brighter sound and are often made of brass or woodwind materials, while orchestra instruments have a more mellow sound and include strings like violins and cellos.
String Instruments
Common instruments used in an orchestra include strings like violins, cellos, and double basses, woodwinds like flutes, clarinets, and oboes, brass instruments like trumpets and trombones, and percussion instruments like drums and cymbals.
Most of the instruments used in classical music are instruments used in an orchestra such as violin, flute, cello and double bass. Pianos and organ are also examples of such instruments.
In an orchestra, various instruments are used, including strings like violins and cellos, woodwinds like flutes and clarinets, brass like trumpets and trombones, and percussion like drums and cymbals.
The actual count and type of woodwinds instruments required in an orchestra is determined by the composer of the piece. Not every single woodwind instrument is used in every single classical piece.
In an orchestra, typical instruments include strings like violins and cellos, woodwinds like flutes and clarinets, brass like trumpets and trombones, and percussion like drums and cymbals.
The orchestra saw a complete upheaval in the Classical period. Here are what I think would be the three most important: Firstly, conductors got off their harpsichords and began conducting in the modern style with a stick. Before that, they simply outlined the tune and held the timing together with a continuo. Next, the instrumentation changed. Recorders fell out of use, being replaced by the modern transverse flute. Clarinets were also first introduced to the orchestra in this time. Finally, the locations and sizes of orchestra began to change. They moved out of courts and private locations where they were restricted in size and grew into much larger orchestras, suited for opera houses and concert halls.
The orchestra instruments used in a symphony performance include strings like violins and cellos, woodwinds like flutes and clarinets, brass like trumpets and trombones, and percussion like drums and cymbals.
Most brass instruments, like the trombone and trumpet, are used in orchestras (think The Imperial March from Star Wars). They are very influential in orchestra music and are used when majestic sounding or scary loud parts are needed. The brass instruments are not often used in chamber orchestra, as they are too LOUD! Trumpets are also used in popular music, particularly jazz, where they will often fill in with a few rhymic chords at the end of a line while the singer takes a breath (a good example is 'Let's Face the Music' by Nat King Cole - the trumpets sound a bit funny because they are muted - they have a hollow lump of metal inside the bell, where the sound comes out). Also, in the UK an old tradition that is dying out is one for Brass Bands. These are formed of brass instruments and percussion. The film Brassed Off is about a Brass Band, and the most famous piece of Brass Band music is probably the Floral Dance. Brass instruments are used in almost all kinds of music. There have been brass instruments in rock groups, are used in all types of jazz and all types of classical pieces. If you are looking for some great brass players try Louis Armstrong, Miles Davis and Freddie Hubbards for a start, and those are just the trumpets! There are many classical movements and composers who've used brass, you've just got to listen for the special timbre of the instrument.
Trumpet