[Tex/LaTex] Chapter Title and Table of Contents

chapterstable of contents

If I use code such as:

\chapter{Introduction}
\subfile{intro/Introduction}

\chapter{Remaining Work}
\subfile{remaining/Remaining}

The result is:

Chapter 1
Introduction

Chapter 2 
Remaining Work

I'd like to remove the "Chapter 1" etc title, preferably replacing with the number and title.

If I use:

\chapter*{Introduction}

Then the Chapter 1 label is removed, however, this ruins the table of contents – sections are labelled 0.1, 0.2 etc without ever being labelled by chapter.

How can I remove the Chapter N label and keep the numbering on the table of contents correct?

EDIT:

Full working example (changing chapter to chapter*):

\documentclass{book}
\usepackage{subfiles}

\begin{document}

\addcontentsline{toc}{chapter}{Contents}
\tableofcontents
\let\cleardoublepage\clearpage

\mainmatter

\chapter{Introduction}
Test
\section{Test1}
Test
\subsection{Test1.1}
Test
\section{Test2}
Test
\section{Test3}
Test
\section{Test4}
Test

\chapter{Remaining Work}
Test
\section{Test1}
Test
\subsection{Test1.1}
Test
\section{Test2}
Test
\section{Test3}
Test
\section{Test4}
Test

\clearpage
\backmatter

\end{document}

Best Answer

In the standard book class, the macro \@makechapterhead creates the chapter title leadin, starting with Chapter N.... chapter title.

Using the xpatch package, this leadin can be removed and stripped down to the pure title only with xpatchcmd.

\documentclass{book}
\usepackage{subfiles}

\usepackage{xpatch}%

\makeatletter  % For \mainmatter chapters so far only!
\xpatchcmd{\@makechapterhead}{\huge\bfseries \@chapapp\space \thechapter}{\huge\bfseries}{}{}%

\makeatother

\begin{document}

\addcontentsline{toc}{chapter}{Contents}
\tableofcontents
\let\cleardoublepage\clearpage

\mainmatter

\chapter{Introduction}
Test
\section{Test1}
Test
\subsection{Test1.1}
Test
\section{Test2}
Test
\section{Test3}
Test
\section{Test4}
Test

\chapter{Remaining Work}
Test
\section{Test1}
Test
\subsection{Test1.1}
Test
\section{Test2}
Test
\section{Test3}
Test
\section{Test4}
Test

\clearpage
\backmatter

\end{document}

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